Arthur eisen



(No Model.)

A. EISBN.

,SE'PARABLE- BUTTON. No. 441,294. Patented Nov. 25. 1890;

n iinegp'eg': fizz/elder.-

ArZ/mr Elke? Q per Jlameyr UNITED STATES ATENT OFFICE.

ARTHUR EISEN, OF PENTONVILLE, COUNTY OF MIDDLESEX, ENGLAND.

SEPARABLE BUTTON.

SPECIFICATION forming part of Letters Patent No. 441,294, dated November25, 1890.

Application filed June 6, 1889- Serial No. 313,097- (No model.) Patentedin England December 1, 1887, No. 16,546-

To all whom, it may concern.-

Be it known that I, ARTHUR EISEN, watchmaker, a subject of the Queen ofGreat Britain, residing at No. 5 Mylne Street, Pentonville, in thecounty of Middlesex, England, have invented certain new and usefulImprovements in Solitaires and Studs, (for which I have obtained apatent in Great Britain, No. 16,546, bearing date December 1, 1887,) ofwhich the following is a specification.

My invention relates to improvements in solitaires and studs the headsof which are adapted to be detached from the stems and re-engagedtherewith without passing the back plates through the fabric.

In order that my invention and the means by which the same can becarried into practical efiect may be thoroughly understood, I will nowdescribe the same in detail, referring in so doing to the accompanyingdrawings, which are to be taken as part of this specification and readtherewith.

The drawings illustrate the application of my invention to a solitaire;but I wish it to be distinctly understood that it is equally applicableand in the same way to a stud.

Figure 1 is a front view of a solitaire, showin g the internal mechanismlocked, but omitting the back-plate. Fig. 2 is a front view of asolitaire, showing the internal mechanism unlocked. Fig. 3 is a backview of a solitairehead, showing the slide in the locked position. Fig.4 is a perspective view of the slide and pin. Fig. 5 is an elevation ofthe back plate and stem. Fig. 6 is a perspective view of thereleasing-stud.

A is the solitaire-head; a, its back; I), the slot cut therein andterminating in a hole 0.

D is the back plate; (Z, the hollow stem fast thereto, and e the collarupon the outer end of the stem. The diameter of the collar 6 is ratherless than that of the hole 0, and that of the stem where it joins thecollar rather less than the width of the slot b.

F is a slide, and f a pin projecting therefrom past the solitaire-backa, and adapted in point of diameter and length to be embraced by thehollow stem (Z.

G G are two detents kept in contact with the slide F by springs h h,which latter cause them to engage with the slide behind the corners 2'for the purpose of locking the back plate to the head.

J is a stud projecting beyond the head, and engaging with the detents GG by means of a fork j.

Suitable guides and recesses for the slide F, the fork j, the detents GG, and the springs h h, respectively, are furnished to a plate 10,secured in any convenient way to the head A.

A solitaire or stud made according to my invention is used as follows:The stem d, having been passed through the fabric, from behind the slideF, is released and drawn back until the end f touches the plate 70, whenthe pin f will be concentric with the hole 0. The pin is then pushedinto the bore of the stem cl, the slide F released from the detents G,if it is made to be engaged by them when itis in the unlocked position,and the head A pushed past the pin f. When the end of the slot 1)farthest from the hole 0 reaches the stem, the detents engage with theslide F behind the corners t' and the solitaire is locked. Thisengagement of the detents G with the slide F causes the stud J toproject beyond the head A. To remove the solitaire from the I fabric,the detents Gare disengaged from the slideF by pressing the stud J in,and the head pushed past the pin f until the hole 0 is concentric Withthe collar e, when it is disengaged from the stem (Z by withdrawing thepin therefrom.

I claim In a stud or button, the combination of back having formedtherein a slot and a hole in which the slot terminates, a back plate andhollow stem fast thereto, a collar on the outer extremity of the stemand of the same diameteras the hole aforesaid, a slide and a pinprojecting therefrom at right angles through the back of the stud,detents adapted to engage and lock the said slide, and a push-pieceadapted to disengage the detents from the slide, as and for the purposeset forth.

In witness whereof I have hereunto set my hand this 22d day of May,1889.

ARTHUR EISEN.

\Vitnesses:

HENRY H. LEIGH,

22 Southampton Bdga, London. PERCY K. WooDWARD,

17 GracecMorch Street, London, E. O.

